Owner's manual

• Hot-Plug Count—Indicates the number of times this physical drive was removed via a hot-plug
event from a storage system since the drive was stamped. The drive was stamped when it left
the factory.
• DRQ Timeouts—Displays the number of times that a physical drive continued to request data
but did not get a command completion. This value increases every time a Data Request (DRQ)
timeout occurs for the physical drive.
A defective drive or cable may cause DRQ timeouts to occur. If you see an increase in these
errors, ensure that the cables connecting the drive are intact.
Logical Drive Information
A list of logical drives associated with the controller displays in the Mass Storage submenu. Each
logical drive in the list displays the condition, logical drive number and the fault tolerance of that
logical drive. Select one of the logical drive entries to display the following information.
• Status—Displays the status of the logical drive. The logical drive can be in one of the following
states:
◦ OK—Indicates that the logical drive is in normal operation mode.
◦ Failed—Indicates that more physical drives have failed than the fault tolerance mode of
the logical drive can handle without data loss.
◦ Unconfigured—Indicates that the logical drive is not configured.
◦ Interim recovery—Indicates that the logical drive is using Interim Recovery Mode. In
Interim Recovery Mode, at least one physical drive has failed, but the logical drive's fault
tolerance mode lets the drive continue to operate with no data loss.
◦ Ready rebuild—Indicates that the logical drive is ready for Automatic Data Recovery. The
physical drive that failed has been replaced, but the logical drive is still operating in
Interim Recovery Mode.
◦ Rebuilding—Indicates that the logical drive is currently doing Automatic Data Recovery.
During Automatic Data Recovery, fault tolerance algorithms restore data to the replacement
drive.
◦ Wrong drive—Indicates that the wrong physical drive was replaced after a physical drive
failure.
◦ Bad connect—Indicates that a physical drive is not responding.
◦ Overheating—Indicates that the drive array enclosure that contains the logical drive is
overheating. The drive array is still functioning, but should be shutdown.
◦ Shutdown—Indicates that the drive array enclosure that contains the logical drive has
overheated. The logical drive is no longer functioning.
◦ Transforming—Indicates that the logical drive is currently undergoing a transformation
(expansion, shrinkage or movement). During transformation, fault tolerance algorithms
redistribute logical drive data according to the transformation operation selected.
◦ Not available—Indicates that the logical drive is currently unavailable. If a logical drive
is expanding and the new configuration frees additional disk space, this free space can
be configured into another logical volume. If this is done, the new volume is set to not
available.
◦ Queued for transformation—Indicates that the logical drive is ready for transformation
(expansion, shrinkage or movement). The logical drive is in the queue for transformation.
◦ Multipath access degraded—Indicates that all the physical drives in the logical drive were
previously accessible by at least two paths, but now at least one physical drive within
that logical drive is accessibly by only a single path due to a hardware fault or a hardware
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